The Windows & Linux System Administrator will administer and maintain Windows 11 and Red Hat Enterprise Linux (RHEL) systems in secure DoD environments, develop PowerShell and Bash automation scripts, and support infrastructure engineering initiatives. The role requires ensuring compliance with DISA security requirements through STIG implementation, patch management, and system hardening, while utilizing Ansible for automation across secure networks. Candidates must have 3+ years each administering Windows and RHEL systems, experience with the IAVM process, and hold an active Secret clearance with IAT Level II certification.